frandom is a fast alternative to /dev/urandom. It can be used wherever fast random number generation is required, eg for randomising large hard drives prior to encryption.

From the frandom page:
"The frandom suite comes as a Linux kernel module for several kernels, or a kernel patch for 2.4.22. It implements a random number generator, which is 10-50 times faster than what you get from Linux' built-in /dev/urandom."

Does frandom generate good random numbers? Refer to the frandom page for this and other technical info.

Beneath in the example section, you'll find 'real', 'user' and 'sys' information, what they mean you can find here.